Re: 2718 2818 to 2009

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Uploaded by on Jan 21, 2009

In another channel called 2d7182818, he/she has proposed six methods, concerning a math puzzle of changing 2718 2818 to 2009 in a mathematical way.
It took me 9 minutes 33 seconds to come up with the 7th method and so I'd like to share with others.

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